/*
 * Copyright 2011 TTOT
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package ttot.extensionmanager.impl.storage;

import java.util.LinkedList;
import java.util.List;

import com.google.inject.Inject;

import ttot.extensionmanager.impl.Extension;

/**
 * Default implementation for {@link ExtensionStorage}.
 * 
 * @author bogdan@krax.ro
 * 
 */
public class ExtensionStorageImpl implements ExtensionStorage {

	private LinkedList<Extension> extensionList = new LinkedList<Extension>();

	/**
	 * Empty constructor to reduce its visibility.
	 */
	@Inject
	ExtensionStorageImpl() {
	}

	/**
	 * Flushes the contents of the storage.
	 */
	public void clear() {
		extensionList.clear();
	}

	/**
	 * Returns the list of stored extensions. The list is a shallow copy of the
	 * inner list.
	 * @return {@link List<Extension>}
	 */
	@SuppressWarnings("unchecked")
	public List<Extension> get() {
		return (List<Extension>) extensionList.clone();
	}

	/**
	 * Adds the provided extension to the storage.
	 */
	public void put(Extension extension) {
		extensionList.add(extension);
	}

}
